package Day16;

import java.util.HashMap;

public class Demo {

    public static void main(String[] args) {
        HashMap<String, Integer> hashMap = new HashMap<>();
        hashMap.put("4", 2);
        String[] strings = new String[] {"3", "4"};
        int k = hashMap.get(strings[1]);
        System.out.println(k);
    }

}
